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fa-asqiṭ
Then cause to fall
REM – prefixed resumption particle fa + V – 2nd person masculine singular (form IV) imperative verb
Root Link: س ق ط
ʿalaynā
upon us
P – preposition + PRON – 1st person plural object pronoun nā
Root Link: ع ل ى
kisafan
fragments
N – accusative masculine plural indefinite noun
Root Link: ك س ف
mina
of
P – preposition
Root Link: م ن
l-samāi
the sky
DET – determiner prefix al + N – genitive feminine noun 
Root Link: س م و
in
if
COND – conditional particle
Root Link: ا ن
kunta
you are
V – 2nd person masculine singular perfect verb + PRON – subject pronoun ta
Root Link: ك و ن
mina
of
P – preposition
Root Link: م ن
l-ṣādiqīna
the truthful
DET – determiner prefix al + N – genitive masculine plural active participle
Root Link: ص د ق

Acknowledgements:

Single-Word Audio has been made possible through software provided by Arabic NLP

James Ada's concordance work; his research can be found at www.organizedQuran.com
Note: James is now a member of the IslamAwakened Continuity Board